Magnetic, Structural, and Particle Size Analysis of Single- and Multi-Core Magnetic Nanoparticles
Journal article, 2014
We have measured and analyzed three different commercial magnetic nanoparticle systems, both multi-core and single-core in nature, with the particle (core) size ranging from 20 to 100 nm. Complementary analysis methods and same characterization techniques were carried out in different labs and the results are compared with each other. The presented results primarily focus on determining the particle size-both the hydrodynamic size and the individual magnetic core size-as well as magnetic and structural properties. The used analysis methods include transmission electron microscopy, static and dynamic magnetization measurements, and Mossbauer spectroscopy. We show that particle (hydrodynamic and core) size parameters can be determined from different analysis techniques and the individual analysis results agree reasonably well. However, in order to compare size parameters precisely determined from different methods and models, it is crucial to establish standardized analysis methods and models to extract reliable parameters from the data.
magnetic materials
magnetic particles
nanoparticles
Magnetic analysis
Author
Frank Ludwig
Technische Universitat Braunschweig
O. Kazakova
National Physical Laboratory
L. F. Barquin
Universidad de Cantabria
A. Fornara
SP Technical Research Institute of Sweden
L. Trahms
Physikalisch-Technische Bundesanstalt
Uwe Steinhoff
Physikalisch-Technische Bundesanstalt
P. Svedlindh
Uppsala Universitet
E. Wetterskog
Uppsala Universitet
Q. A. Pankhurst
UCL
P. Southern
UCL
P. Morales
Universidad de Cantabria
M. F. Hansen
Danmarks Tekniske Universitet
C. Frandsen
Danmarks Tekniske Universitet
Eva Olsson
Chalmers, Applied Physics, Eva Olsson Group
Stefan Gustafsson
Chalmers, Applied Physics, Eva Olsson Group
SuMo Biomaterials
N. Gehrke
NanoPET Pharma GmbH
K. Ludtke-Buzug
Universitat zu Lubeck
C. Gruttner
Micromod Partikeltechnologie GmbH
Christian Jonasson
Acreo AB
C. Johansson
Acreo AB
IEEE Transactions on Magnetics
0018-9464 (ISSN)
Vol. 50 11Subject Categories (SSIF 2011)
Physical Sciences
Nano Technology
DOI
10.1109/TMAG.2014.2321456